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  1. prefixes = tuple("2012/09/30-00:00:1%d" % i for i in range(3))
  2. import sys
  3. file = sys.stdin
  4. print ''.join(line for line in file if line.startswith(prefixes)),
  5.  
Success #stdin #stdout 0.08s 10848KB
stdin
2012/09/30-00:00:08.773 log error
2012/09/30-00:00:09.034 log warning
2012/09/30-00:00:09.352 log info
2012/09/30-00:00:10.526 log info
2012/09/30-00:00:10.995 log warning
2012/09/30-00:00:12.014 log warning
2012/09/30-00:00:18.035 log error
2012/09/30-00:00:21.733 log fatal
2012/09/30-00:00:21.981 log info
stdout
2012/09/30-00:00:10.526 log info
2012/09/30-00:00:10.995 log warning
2012/09/30-00:00:12.014 log warning